Book Image

Docker for Developers

By : Richard Bullington-McGuire, Andrew K. Dennis, Michael Schwartz
2 (1)
Book Image

Docker for Developers

2 (1)
By: Richard Bullington-McGuire, Andrew K. Dennis, Michael Schwartz

Overview of this book

Docker is the de facto standard for containerizing apps, and with an increasing number of software projects migrating to containers, it is crucial for engineers and DevOps teams to understand how to build, deploy, and secure Docker environments effectively. Docker for Developers will help you understand Docker containers from scratch while taking you through best practices and showing you how to address security concerns. Starting with an introduction to Docker, you’ll learn how to use containers and VirtualBox for development. You’ll explore how containers work and develop projects within them after you’ve explored different ways to deploy and run containers. The book will also show you how to use Docker containers in production in both single-host set-ups and in clusters and deploy them using Jenkins, Kubernetes, and Spinnaker. As you advance, you’ll get to grips with monitoring, securing, and scaling Docker using tools such as Prometheus and Grafana. Later, you’ll be able to deploy Docker containers to a variety of environments, including the cloud-native Amazon Elastic Kubernetes Service (Amazon EKS), before finally delving into Docker security concepts and best practices. By the end of the Docker book, you’ll be able to not only work in a container-driven environment confidently but also use Docker for both new and existing projects.
Table of Contents (21 chapters)
1
Section 1: An Introduction to Docker – Containers and Local Development
6
Section 2: Running Docker in Production
14
Section 3: Docker Security – Securing Your Containers

Example application – ShipIt Clicker

The linked GitHub repository for this chapter has code for a prototype for an online game – called ShipIt Clicker. In this game, a fedora-clad squirrel urges you to deploy containers to production; the faster you click, the faster you accumulate Squirrel Dollars (SQ$), which you can use in the ShipIt Store to purchase upgrades that either increase how many containers you deploy per click, or allow you to deploy containers even if you are not clicking. The prototype version of this game has a simple HTML interface, with a RESTful API that talks to a Redis database to keep score. The version of ShipIt Clicker included in this chapter is a bare-bones prototype that has only a fraction of the full features of the game. However, it has many of the characteristics of an early-stage production application and is ready for its first production deployment. It features a setup using docker-compose to run multiple containers. The game features...